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Note 11 - Inventory - Inventory Components (Details) - USD ($)
$ in Thousands
Jul. 01, 2018
Jan. 01, 2018
Dec. 31, 2017
Raw materials $ 11,077   $ 10,011
Work in process 6,413   7,150
Finished goods 1,257   1,645
Reserve for excess and obsolete inventory (1,192)   (1,165)
Total $ 17,555 $ 16,986 $ 17,641